Describes Germany's carbon dioxide reduction programme, which was passed in November 1990. As a step towards the protection of the global atmosphere, the extensive national programme is designed to cut back the carbon dioxide emissions in Germany by 25% by the year 2005. These values are based on the 1987 figures, so that 25% is the equivalent of 300 million tons of CO2. For the construction industry an even higher is to be achieved.

Kitchen hoods play an essential role in the ventilation of kitchens. This paper describes activities carried out at the Belgian Building Research Institute with respect tothe determination of kitchen hood efficiencies. The linkwith European standardization is also described.